What is a codon? A) a sequence of ribonucleotides on tRNA (B) a triplet of deoxy

Question

What is a codon? A) a sequence of ribonucleotides on tRNA (B) a triplet of deoxyribonucleotides C) a very small gene D) a very small genome E) a triplet of ribonucleotides Which of the following is not true of the cytoskeleton? A) It refers to a network of cytoplasmic filaments B) It refers to the cellular components of bone C) It helps to determine a cell's shape D) It includes act in filaments E) It is important for cellular movement Which of the following is a cause of asthma? A) environmental chemicals that stimulate beta_2 adrenergic receptors B) lack of pulmonary surfactant C) inflammation of the bronchioles D) loss of alveoli E) elevation of intrapleural pressure to equal atmospheric pressure Which of the following drugs, administered as an aerosol spray, would be most likely to help an infant with respiratory distress syndrome of the newborn? A) a beta-adrenergic agonist B) pulmonary surfactant C) a beta-adrenergic antagonist D) histamine E) a muscarinic agonist Which of the following drugs, administered as an aerosol spray, would be most likely to help a victim of an asthmatic attack? A) pulmonary surfactant B) a beta_2 adrenergic antagonist C) histamine D) a muscarinic agonist E) a beta_2-adrenergic agonist Under what conditions is long compliance increased? A) asthma B) respiratory distress syndrome of the newborn C) emphysema D) cystic fibrosis E) prolonged shallow breathing

Explanation / Answer

42.Answer is A

Explanation: It is a sequence of 3 nucleotide on DNA or RNA that together form a unit of the genetic code.

43.Answer is B

All other statements are True for Cytoskeleton

44.Answer is C

explanation:The bronchioles are inflammed and become narrow in Asthma.

45.Answer is B

explanation:The treatment is called surfactant replacement therapy and it is a liquid which coats the lungs and keeps it open and makes it easier to breathe.

46.Answer is E

explanation:The beta adernergic agonist inhaler is a fast acting bronchodilator used for asthmatic attack.It acts fast bringing short acting quick relief.

47.Answer is C

explanation: In emphysema, the lungs are highly compliant due to enzyme caused damage of the elastic tissue.

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